mirror of
https://github.com/SELinuxProject/selinux
synced 2025-02-21 12:06:51 +00:00
6968ea9775
As ebitmap_get_bit() complexity is linear in the size of the bitmap, the complexity of ebitmap_cardinality() is quadratic. This can be optimized by browsing the nodes of the bitmap directly in ebitmap_cardinality(). While at it, use built-in function __builtin_popcountll() to count the ones in the 64-bit value n->map for each bitmap node. This seems better suited than "count++". This seems to work on gcc and clang on x86, x86_64, ARM and ARM64 but if it causes compatibility issues with some compilers or architectures (or with older versions of gcc or clang), the use of __builtin_popcountll() can be replaced by a C implementation of a popcount algorithm. Signed-off-by: Nicolas Iooss <nicolas.iooss@m4x.org> |
||
|---|---|---|
| .circleci | ||
| checkpolicy | ||
| dbus | ||
| gui | ||
| libselinux | ||
| libsemanage | ||
| libsepol | ||
| mcstrans | ||
| policycoreutils | ||
| python | ||
| restorecond | ||
| sandbox | ||
| scripts | ||
| secilc | ||
| semodule-utils | ||
| .gitignore | ||
| .travis.yml | ||
| CleanSpec.mk | ||
| CONTRIBUTING.md | ||
| lgtm.yml | ||
| Makefile | ||
| README | ||
Please submit all bug reports and patches to selinux@vger.kernel.org. Subscribe by sending "subscribe selinux" in the body of an email to majordomo@vger.kernel.org. Build dependencies on Fedora: yum install audit-libs-devel bison bzip2-devel dbus-devel dbus-glib-devel flex flex-devel flex-static glib2-devel libcap-devel libcap-ng-devel pam-devel pcre-devel python3-devel python3-setools swig xmlto redhat-rpm-config To build and install everything under a private directory, run: make DESTDIR=~/obj install install-pywrap To install as the default system libraries and binaries (overwriting any previously installed ones - dangerous!), on x86_64, run: make LIBDIR=/usr/lib64 SHLIBDIR=/lib64 install install-pywrap relabel or on x86 (32-bit), run: make install install-pywrap relabel This may render your system unusable if the upstream SELinux userspace lacks library functions or other dependencies relied upon by your distribution. If it breaks, you get to keep both pieces. To install libsepol on macOS (mainly for policy analysis): cd libsepol; make PREFIX=/usr/local install This requires GNU coreutils (brew install coreutils).